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Caption switching method and device

A technology for switching devices and subtitles, applied in the field of Internet TV, can solve the problems of screen freezes and waiting for a period of time, and achieve the effect of smooth subtitle switching.

Inactive Publication Date: 2016-07-06
SHENZHEN TCL DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The main purpose of the present invention is to provide a subtitle switching method and device, which aims to solve the technical problem that the existing subtitle switching method needs to wait for a period of time when switching subtitles and will cause the picture to freeze

Method used

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  • Caption switching method and device
  • Caption switching method and device

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Embodiment Construction

[0056] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0057] In order to solve the problem of waiting for a period of time during the multi-subtitle switching process and the screen freezing during the switching process, such as figure 2 Shown, subtitles in all languages ​​are cached after demuxing the video file. In order to achieve subtitle switching more smoothly and quickly, and realize the connection between the switched subtitle and the currently displayed video screen as soon as possible, the minimum TS2 (timestamp, time stamp) of subtitle data in the buffer subtitle data of non-currently played subtitles such as Subtile2 and Subtile3 needs to be equal to The current display timestamp pts of the video or audio (where pts=TS3), that is, TS2 is equal to TS3 can realize the seamless connection between the switched subtitles and the current audio and video, and reali...

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Abstract

The invention discloses a caption switching method and a device. The caption switching method comprises steps that a caption switching instruction inputted by a user is received; the to-be-switched caption data stored in the corresponding preset caching zone and corresponding to the caption switching instruction and the present display timestamp of the audio-video data in a playing process are acquired; the caption data in the to-be-switched caption data with the timestamp equal to the presently-displayed timestamp is outputted and displayed. According to the method, captions of all languages are cached when a audio-video file is played, through removing the storage data in the caching zone with the timestamp of the non-presently-played language caption data smaller than the timestamp of the presently-played audio-video data, the data of the to-be-switched caption data with the timestamp equal to the timestamp of the presently-displayed audio-video data is outputted and displayed, so the content of a data frame of the caption data after switching is in matching with the content of a presently-played data frame, so caption switching is relatively smooth, and a stuttering phenomenon does not occur.

Description

technical field [0001] The invention relates to the field of Internet television, in particular to a subtitle switching method and device. Background technique [0002] In many countries and regions, especially some video content service providers in Europe, in order to better provide video-on-demand program services for people in different language countries, subtitles in different languages ​​are embedded in the video files of the programs. When people are watching a program, they can switch subtitles in different languages ​​through the remote control. For example, when watching blockbuster movies in China, many programs provide both Chinese and English subtitles. like figure 1 As shown, the general subtitle switching process is as follows: [0003] Subtitle1 subtitle with language type A is currently playing; when the user switches to Subtitle2 subtitle with language type B: [0004] First, stop sending the data of the Subtile1 subtitle into the buffer A1, empty the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/434H04N21/435H04N21/4405H04N21/431
CPCH04N21/43H04N21/435H04N21/4384H04N21/4884H04N21/4302H04N21/4331H04N21/4341H04N21/439H04N21/44004H04N21/8456
Inventor 江中央周文杰王甜甜
Owner SHENZHEN TCL DIGITAL TECH CO LTD